Added collection level joins into README
Added collection level joins into README
achoy/ejdb,achoy/ejdb,achoy/ejdb,dmigous/ejdb,Softmotions/ejdb,Softmotions/ejdb,safx/ejdb,almightycouch/ejdb,poelzi/ejdb,poelzi/ejdb,poelzi/ejdb,poelzi/ejdb,safx/ejdb,Softmotions/ejdb,workshare/ejdb,safx/ejdb,poelzi/ejdb,workshare/ejdb,almightycouch/ejdb,poelzi/ejdb,almightycouch/ejdb,Softmotions/ejdb,Softmotions/ejdb,dmigous/ejdb,poelzi/ejdb,poelzi/ejdb,Softmotions/ejdb,Softmotions/ejdb,achoy/ejdb,poelzi/ejdb,Softmotions/ejdb